Pytela, Oldrich; Dlouhy, Vladimir, Collection of Czechoslovak Chemical Communications, 1990, vol. 55, # 10, p. 2468 - 2474
作者:Pytela, Oldrich、Dlouhy, Vladimir
DOI:——
日期:——
NaNO2/I2 as an alternative reagent for the synthesis of 1,2,3-benzotriazin-4(3H)-ones from 2-aminobenzamides
作者:Dinesh S. Barak、Sushobhan Mukhopadhyay、Dipak J. Dahatonde、Sanjay Batra
DOI:10.1016/j.tetlet.2018.12.025
日期:2019.1
An efficient transformation of 2-aminobenzamides to 1,2,3-benzotriazin-4(3H)-ones in the presence of sodium nitrite (NaNO2) and Iodine (I2) is described. The reaction is proposed to proceed via formation of nitrosyl halide that induces nitrosylation of the amino group of 2-aminobenzamide leading to diazotization followed by intramolecular cyclization.